Born : Feb 17 1840.
Educated : Cheltenham, Sandhurst and Woolwich.
1857 : Joined the Royal Engineers.
1867 : Served in Palestine.
1870 : Returned to England.
1876-77 : Posted to Africa as Special Commissioner for Colonial Office.
1877-78 : Fought in Kaffir War during which he was severely wounded and promoted to the rank of Lieutenant-Colonel.
1880 : Returned to England.
1882 : Tracked down the murderers of Professor Edward Palmer's Expedition in Egypt. Was knighted.
1884 : In second expedition to relieve General Gordon at Khartoum.
1886 : Mar - Succeeded Edmund Henderson as Metropolitan Police Commissioner.
1888 : Nov 8 - Resigned as Commissioner.
1899-1902 : Fought in the Boer War.
1927 : Jan 26 - Died.
Warren never made any statements about who he thought the killer might be but in a report to the Home Office on Oct 17 1888 he wrote "I look upon this series of murders as unique in the history of our country."